JP5473012B2 - Forming machine - Google Patents

Description

  The present invention relates to a forming machine that processes a workpiece by converting rotation of a motor into linear motion of a processing tool.

  Conventionally, as this type of forming machine, there is known a machine equipped with a cam mechanism or a crank mechanism for converting the rotation of a motor into a linear motion of a machining tool. In such a forming machine, since the pressing force due to linear motion is maximized at the bottom dead center, the workpiece is usually machined so that the machining reaction force becomes the highest near the bottom dead center (for example, patents) Reference 1).

JP 54-60270 (FIG. 1)

  By the way, in the forming machine described above, in order to increase productivity, there is a case where the machining tool performs a process that receives a large process reaction force at a position other than the bottom dead center. For example, in order to increase the productivity of punching a workpiece from a base material and bending the workpiece, which were originally performed in two steps, in one step in one stroke of the processing tool, the processing tool Will receive a large machining reaction force at the initial stage and the final stage of the forward process toward the bottom dead center.

  However, at the initial stage of the forward process in which the machining tool is greatly deviated from the bottom dead center, the motor power cannot be sufficiently amplified, resulting in insufficient motor power. On the other hand, in the past, since the capacity of the motor was increased, the pressing force by the processing tool became overspec at the bottom dead center (becomes excessively large), and problems such as interference occurred. There could be a situation where the machining tools and drive system parts were destroyed.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a forming machine capable of preventing overspec of pressing force by a processing tool and improving productivity.

  In order to achieve the above object, a forming machine according to the invention of claim 1 is a rotation / linear motion conversion mechanism having a bottom dead center that converts rotation into linear motion and maximizes the pressing force due to the linear motion. Converts the rotation of the main motor into the linear motion of the machining tool, and converts the rotation of the sub motor into the linear motion of the pressing tool using the main slide drive mechanism that processes the workpiece with the machining tool and the rotation / linear motion conversion mechanism. The press tool is characterized in that it includes a sub-slide drive mechanism that temporarily presses the machining tool on the way to the bottom dead center in the forward direction.

  The invention of claim 2 is characterized in that, in the forming machine according to claim 1, the pressing tool presses the processing tool at the bottom dead center of the pressing tool.

  According to a third aspect of the present invention, in the forming machine according to the first or second aspect, the pressing tool is attached to a slider that moves linearly by receiving power from the sub motor, and the direction parallel to the linear movement direction with respect to the slider. It is characterized in that it is provided with a position adjusting mechanism that can be fixed by placing a pressing tool at any position.

  According to a fourth aspect of the present invention, in the forming machine according to any one of the first to third aspects, a plurality of sub-slide drive mechanisms are provided, and different sub-slide drive mechanisms at different timings are processed by a pressing tool. Is characterized in that it is pressed in the forward direction.

  According to a fifth aspect of the present invention, in the forming machine according to any one of the first to fourth aspects, the processing tool or a slider that moves linearly integrally with the processing tool is pressed toward the opposite side in the forward direction. There is a feature in that a surface is provided and the pressing tool is arranged so as to be linearly movable in a direction obliquely intersecting with the linear movement direction of the processing tool so that the pressed surface can be pressed.

  According to a sixth aspect of the present invention, in the forming machine according to any one of the first to fifth aspects, the processing tool stands by in a processing area where the processing tool is advanced, and the processing tool is moving forward toward the bottom dead center. The primary processing mandrel that works with the processing tool and then moves back from the processing area, and waits in the processing area and cooperates with the processing tool when the processing tool reaches bottom dead center. And a secondary processing mandrel for processing the workpiece, and when the processing tool and the primary processing mandrel work together to machine the workpiece, the pressing tool is used to press the processing tool in the forward direction. Have.

  According to a seventh aspect of the present invention, in the forming machine according to any one of the first to sixth aspects, the rotation / linear motion converting mechanism includes a linear motion movable portion including a processing tool or a pressing tool, and a linear motion It has a toggle link whose both ends are rotatably connected to a rotation support portion fixed to a base portion that supports the movable portion so that it can move linearly, and a joint portion provided in the middle of the toggle link from the motor By pushing and pulling from the side with the motive power, the toggle link is bent and stretched so that the linearly movable part can be linearly moved.

  In the forming machine according to claim 1, even if the machining tool receives a large machining reaction force at a position other than the bottom dead center and the main motor of the main slide drive mechanism alone is insufficient in power, the sub slide using the sub motor as a drive source. When the pressing tool of the drive mechanism temporarily presses the machining tool on the way to the bottom dead center in the forward direction, the power shortage of the main motor can be compensated. As a result, processing that has conventionally been divided into a plurality of steps can be performed in one step in one stroke of the processing tool, and productivity can be increased. Moreover, since it is not necessary to increase the capacity | capacitance of a main motor like the past, the overspec of the pressing force by a processing tool can be prevented.

  If the pressing tool is configured to press the processing tool at the bottom dead center of the pressing tool as in the forming machine according to claim 2, the processing tool is pressed by the pressing tool in a state where the power of the sub motor is greatly amplified. This can greatly reduce the load on the main motor.

  In the forming machine according to the third aspect, by arranging and fixing the pressing tool at an arbitrary position with respect to the slider, the timing at which the pressing tool presses the processing tool can be changed, and it corresponds to a plurality of types of workpieces. be able to.

  The forming machine according to claim 4 includes a plurality of sub-slide drive mechanisms, and different sub-slide drive mechanisms press the processing tool in the forward direction with the pressing tool at different timings, so that the processing reaction force is increased multiple times. Such complicated processing can be performed during one stroke of the processing tool, and productivity is improved.

  In the present invention, as a configuration for pressing the processing tool with the pressing tool, the processing tool or the slider is provided with a pressed surface facing the opposite side of the forward direction, and the pressing tool moves in parallel with the processing tool. The pressed surface may be configured to be pressed, and as in the invention of claim 5, the pressed tool is linearly moved in a direction obliquely intersecting with the linear motion direction of the processing tool. You may comprise so that a surface may be pressed. According to the configuration of the fifth aspect, the sub-slide drive mechanism can be arranged using the space on the side of the main slide drive mechanism.

  As in the forming machine according to claim 6, the processing tool reaches the bottom dead center while the processing tool advances toward the bottom dead center and the primary processing mandrel for processing the workpiece in cooperation with the processing tool. In some cases, when a secondary processing mandrel for machining a workpiece in cooperation with the machining tool is provided, when the machining tool and the primary machining mandrel work in cooperation with the main motor, Although power shortage may occur, in the invention of claim 6, when the processing tool and the primary processing mandrel cooperate to process the workpiece, the pressing tool presses the processing tool in the forward direction. The shortage of motor power can be compensated.

  Note that, as in the forming machine of the seventh aspect, the rotation / linear motion conversion mechanism may have a toggle link.

The front view of the forming machine which concerns on 1st Embodiment of this invention. Enlarged front view around the mandrel Enlarged front view of the pressing tool pressing the processing tool Enlarged front view of machining tool reaching bottom dead center Enlarged front view with the bending tool pressed against the workpiece Enlarged front view of the bottom pressure tool pressed against the workpiece Enlarged front view around the mandrel after the workpiece has been machined Enlarged front view around the mandrel of the forming machine of the second embodiment Enlarged front view around the mandrel after the workpiece has been subjected to primary bending Enlarged front view around the mandrel with the workpiece second bent Enlarged front view of the bending tool pressed against the workpiece The enlarged front view around the mandrel of the forming machine of the third embodiment Enlarged front view with one pressing tool pressing the processing tool Enlarged front view of the other pressing tool pressing the processing tool Enlarged front view around the mandrel with the workpiece second bent Front view around the core of the forming machine of the fourth embodiment

[First Embodiment]
Hereinafter, an embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 1, the forming machine 10 of the present embodiment includes a mandrel 53 on the front surface of a vertically upstanding base substrate 11, and a main slide drive mechanism 21 and a sub-slide drive mechanism around the mandrel 53. 22 and a plurality of push-up slide drive mechanisms 24 are arranged radially.

  As shown in FIG. 2, the mandrel 53 has a semicircular arc surface on the upper side and a shape having a horizontal surface on the lower side, and protrudes forward from the front surface of the base substrate 11. A pair of base material guides 54, 54 are provided on both sides of the mandrel 53. Each base material guide 54 has a structure in which an upper guide block 54A and a lower guide block 54B are vertically opposed to each other with a guide gap 54C. Then, the guide gaps 54C, 54C of both the base material guides 54, 54 are disposed on the same horizontal plane, and the guide gaps 54C, 54C of the base material guides 54, 54 are moved from the right side of FIG. It is sent to the left side.

  The upper end corners of the opposing surfaces 54T, 54T of the lower guide blocks 54B, 54B facing each other are edge-shaped sheet metal cutting blades 54D, 54D. The opposing surfaces of the upper guide blocks 54A and 54A are inclined surfaces 54S and 54S that are inclined so as to approach each other from the upper end corner portion toward the lower end position. Further, in the upper side guide block 54A on the upstream side in the base material feeding direction, the lower part of the inclined surface 54S is flush with the facing surface 54T of the lower guide block 54B. On the other hand, in the upper side guide block 54A on the downstream side in the base material feeding direction, the lower part of the inclined surface 54S is a base material introduction surface 54G inclined toward the guide gap 54C.

  As shown in FIG. 1, a base material feeding device 15 is provided on the right end of the front surface of the base substrate 11. The base material feeding device 15 includes a pair of feeding rollers 13 and 13 arranged symmetrically above and below the extension lines of the guide gaps 54C and 54C of the base material guides 54 and 54 described above. 13 is rotated symmetrically by a feeding servo motor (not shown) to feed the base material W to the base material guides 54 and 54 side. In addition, before and after sandwiching the feeding rollers 13 and 13 in the base material feeding direction, feeding guides 12 and 12 having a guide gap similar to the base material guide 54 are provided.

  As shown in FIG. 1, a total of three push-up slide drive mechanisms 24 described above are provided, and one of the push-up slide drive mechanisms 24 extends vertically below the mandrel 53 and the remaining two push-up slide drive mechanisms 24. 24 are symmetrically extended from the mandrel 53 obliquely downward. The main slide drive mechanism 21 extends vertically upward from the mandrel 53, and the sub-slide drive mechanism 22 extends obliquely leftward from the mandrel 53.

  Of these slide drive mechanisms 21, 22, 24, the main slide drive mechanism 21 will be described in detail below. The main slide drive mechanism 21 includes a fixed base 20 that is fixed to be overlapped with the front surface of the base substrate 11, and the end of the fixed base 20 on the mandrel 53 side is vertically arranged as shown in FIG. An extended slider guide groove 20M is recessed. The slider 34 is accommodated in the slider guide groove 20M so as to be linearly movable. Further, from the position near the upper end of the slider 34, a cylindrical link coupling protrusion 33 protrudes on the side opposite to the base substrate 11.

  As shown in FIG. 1, a crank disk 30 is rotatably supported at the end of the fixed base 20 on the side away from the mandrel 53. A cylindrical eccentric shaft portion 31 protrudes from the front end surface of the crank disk 30 at a position eccentric from the center of rotation. Both ends of the crank link 32 are rotatably connected to the eccentric shaft portion 31 and the link coupling protrusion 33 of the slider 34 described above.

  A servo motor 21M and a speed reducer (not shown) are provided on the rear surface side of the base substrate 11, and the rotation output of the servo motor 21M is transmitted to the crank disk 30 through the speed reducer, so that the crank disk 30 is rotationally driven. Then, the slider 34 is linearly moved by the rotation of the crank disk 30. At this time, the position of the slider 34 when the eccentric shaft portion 31 is closest to the mandrel 53 side corresponds to the bottom dead center, and when reaching the bottom dead center from the front of the bottom dead center, the slider 34 moves downward. The pressing force is maximized.

  A processing tool 36 is fixed to the lower end portion of the slider 34. The processing tool 36 has a prismatic shape extending in the vertical direction, for example, and is fixed by tightening a tool fixing bolt 35B penetrating the upper end portion of the processing tool 36 into a screw hole (not shown) provided in the slider 34. . Further, the processing tool 36 is supported by a tool guide 80 (see FIG. 2) protruding from the front surface of the base substrate 11 above the base material guides 54, 54 in the base substrate 11 so as to be movable up and down.

  As shown in FIG. 3, on the lower end surface of the processing tool 36, an arc groove 38A corresponding to the arc surface of the mandrel 53 at the center in the left-right direction, and gradually from the both side edges of the arc groove 38A to the side. And a pair of lower end inclined surfaces 38B, 38B inclined downward. Further, the lower end corners where both side surfaces and the lower end surface of the processing tool 36 intersect are sheet metal cutting blades 38E and 38E for cutting the base material W.

  The processing tool 36 can adjust the mounting position of the processing tool 36 with respect to the slider 34 in the linear movement direction of the slider 34. Specifically, the hole of the machining tool 36 through the tool fixing bolt 35 </ b> B of the machining tool 36 is a long hole that extends in the linear movement direction of the slider 34 (not shown). Further, as shown in FIG. 2, a bolt support protruding wall 35 protrudes from a position near the tip of the slider 34, and the adjustment bolt 35A is screwed into a screw hole (not shown) penetrating the bolt support protruding wall 35 in the vertical direction. It penetrates together. With this configuration, the tool fixing bolt 35B is loosened and the amount of protrusion of the adjustment bolt 35A from the bolt support protruding wall 35 toward the processing tool 36 is adjusted, and then the processing tool 36 is attached to the tip (lower end) of the adjustment bolt 35A. The position of the processing tool 36 with respect to the slider 34 can be adjusted by tightening the tool fixing bolt 35B while abutting the.

  A pressed protrusion 37 is provided at an intermediate portion in the vertical direction of the processing tool 36. The pressed protrusion 37 has a plate-like shape projecting horizontally from the front surface (surface opposite to the base substrate 11) of the processing tool 36, and a part of the pressed protrusion 37 projects sideways from the left side surface of the processing tool 36. It is located in front of the guide 80. A horizontal upper surface of the pressed protrusion 37 is a pressed surface 37A according to the present invention.

  Next, the configuration of the sub slide drive mechanism 22 will be described. As shown in FIG. 1, the sub-slide drive mechanism 22 has a configuration in which only the processing tool 36 among the components of the main slide drive mechanism 21 is replaced with a pressing tool 39. As shown in FIG. 2, the pressing tool 39 is fixed to the slider 34 of the sub-slide drive mechanism 22 with a tool fixing bolt 35B, and a fixed block portion 39A engaged with the slider guide groove 20M so as to move linearly. , And a prismatic tool body 39B extending from the fixed block portion 39A toward the mandrel 53 side. The pressing tool 39 is integrated with the slider 34 and moves linearly in a direction extending obliquely upward to the left from the mandrel 53. Further, the distal end portion of the pressing tool 39 (specifically, the distal end portion of the tool main body 39B) is cut obliquely and includes a pressing surface 39C parallel to the pressed surface 37A of the pressed protrusion 37.

  The sub-slide drive mechanism 22 includes a bolt support projecting wall 35, an adjustment bolt 35A, a tool fixing bolt 35B, and a tool fixing bolt 35B. Corresponds to "mechanism". The servo motor 21M of the main slide drive mechanism 21 described above corresponds to the “main motor” according to the present invention. Therefore, this will be referred to as “main motor 21M”, and the servo motor of the sub slide drive mechanism 22 will be hereinafter referred to. Since 22M corresponds to the “sub motor” according to the present invention, hereinafter, it will be referred to as “sub motor 22M”.

  As shown in FIG. 1, the center push-up slide drive mechanism 24 has a structure including a lower surface pressurizing tool 40 instead of the processing tool 36 of the main slide drive mechanism 21, and the push-up slide drive mechanisms 24 on both sides thereof are Instead of the processing tool 36 of the main slide drive mechanism 21, a bending processing tool 41 is provided. Further, the lower surface pressing tool 40 and the bending tool 41 are fixed to the slider 34 so that the position cannot be adjusted. The other configurations of each push-up slide drive mechanism 24 are the same as those of the main slide drive mechanism 21, and the rotation output of the servo motor 24M is converted into the linear motion of the lower surface pressurizing tool 40 or the bending tool 41. Output.

  In FIG. 3, the lower surface pressing tool 40 and the bending tool 41 are shown enlarged. The front end surface of the lower surface pressing tool 40 faces the lower surface of the mandrel 53 in parallel. Further, L-shaped pressing surfaces 41 </ b> A and 41 </ b> A are provided at the front ends of the bending tools 41 and 41, respectively, so as to match the lower corners of the mandrel 53. The lower surface pressing tool 40 and the bending tools 41, 41 are engaged with guide grooves 81M of a tool guide 81 provided below the base material guides 54, 54 so as to be capable of linear movement.

  This completes the description of the configuration of the forming machine 10 of the present embodiment. Next, the function and effect of the forming machine 10 will be described. When the forming machine 10 is activated, as shown in FIG. 2, the base material W is above the mandrel 53 with the machining tool 36, the lower surface pressing tool 40, and the bending processing tools 41, 41 being separated from the mandrel 53. And is passed between the base material guides 54 and 54, and is disposed adjacent to the top portion of the mandrel 53.

  Then, as shown in FIG. 3, the processing tool 36 starts to advance toward the bottom dead center. Then, at the initial stage of the advancement, the base material W is cut by cutting two portions of the base material W between the metal plate cutting blades 38E, 38E of the processing tool 36 and the metal plate cutting blades 54D, 54D of the base material guides 54, 54. The workpiece 90 having a certain length is cut from the workpiece, and the workpiece 90 is pressed against the top portion of the mandrel 53 to start bending. Due to the separation of these workpieces 90 and the start of bending, the machining tool 36 receives a relatively large machining reaction force in the initial stage of the forward process toward the bottom dead center. However, since the processing tool 36 is away from the bottom dead center, it is not possible to apply large power to the processing tool 36 from the main motor 21M.

  However, in the forming machine 10 according to the present embodiment, when the processing tool 36 starts to move forward, the sub-slide drive mechanism 22 is activated, and the pressing surface 39C of the pressing tool 39 is moved toward the pressed protrusion 37 of the processing tool 36. The pressing tool 39 presses against the pressed surface 37A and presses the processing tool 36 in the forward direction. Then, when the workpiece 90 is separated from the base material W and the workpiece 90 is slightly bent, the pressing tool 39 reaches the bottom dead center. In this way, the processing tool 36 receives power from not only the main motor 21M of the main slide drive mechanism 21 but also the sub motor 22M of the sub slide drive mechanism 22 to detach the work 90 from the base material W and Bending is started.

  Next, while the pressing tool 39 reaches the bottom dead center and stops or retreats, the processing tool 36 is further lowered to bend the workpiece 90. Then, when the machining tool 36 reaches the bottom dead center or near the bottom dead center, as shown in FIG. 4, the intermediate portion in the left-right direction of the workpiece 90 is the arc surface of the mandrel 53 and the inner surface of the arc groove 38A of the machining tool 36. Are formed in a semicircular shape, and a pair of linear portions protrude downward from both ends thereof.

  In this state, as shown in FIG. 5, the bending tools 41 and 41 are raised and bent so that the pair of straight portions of the workpiece 90 are overlapped with the lower surface of the mandrel 53, and then in FIG. As shown, the lower surface pressurizing tool 40 rises and presses the straight portion of the workpiece 90 against the lower surface of the mandrel 53. Then, as shown in FIG. 7, after the processing tool 36, the lower surface pressing tool 40 and the bending processing tools 41, 41 are separated from the mandrel 53, a knockout pin (not shown) moves the workpiece 90 from the base substrate 11 side. The workpiece 90 is released from the mandrel 53 forward by pressing.

  As described above, in the forming machine 10 of this embodiment, the machining tool 36 receives a large machining reaction force at a position other than the bottom dead center, and the main motor 21M (see FIG. 1) of the main slide drive mechanism 21 alone is insufficient in power. Even when the pressing tool 39 of the sub slide drive mechanism 22 using the sub motor 22M (see FIG. 1) as a drive source temporarily presses the processing tool 36 on the way to the bottom dead center in the forward direction, The power shortage of the main motor 21M can be compensated. As a result, processing that has been conventionally divided into a plurality of steps can be performed in one step in one stroke of the processing tool 36, and productivity can be increased. Further, since it is not necessary to increase the capacity of the main motor 21M as in the prior art, it is possible to prevent over-specification of the pressing force by the processing tool 36. In addition, since the pressing tool 39 presses the processing tool 36 at the bottom dead center of the pressing tool 39, the pressing tool 39 can press the processing tool 36 forward with the power of the sub motor 22M most amplified. The load on the motor 21M is greatly reduced. In the present embodiment, the timing of pressing the processing tool 36 by the pressing tool 39 can be changed by arranging and fixing the pressing tool 39 at an arbitrary position with respect to the slider 34, so that a plurality of types of workpieces can be changed. It can correspond to.

[Second Embodiment]
The forming machine 10V of the present embodiment is shown in FIGS. 8 to 11 and is different from the first embodiment in that a plurality of cores are provided. Further, in the forming machine 10V of the present embodiment, the processing tool 36V does not cut the workpiece 91 from the base material W, but a group of workpieces 91 that have been previously cut to a predetermined length by a cutting machine (not shown) is placed on the processing tool 36V side. The point of feeding is also different from the first embodiment.

  Specifically, in the forming machine 10V of the present embodiment, the secondary processing mandrel 55 that protrudes forward from the base substrate 11 in a columnar shape and the left and right sides of the secondary processing mandrel 55 are symmetrical to each other. A pair of primary processing mandrels 56 and 56 that are arranged and project forward from the base substrate 11 are provided. The pair of primary processing cores 56, 56 has an arcuate surface 56 </ b> A at the upper corner on the side away from the secondary processing core 55 out of the prisms in line contact with both sides of the secondary processing core 55. It has a shape that it has. The circular arc surface 56A has a size that is 1/4 of that of the secondary processing mandrel 55 and the peripheral surface. Further, the upper end positions of the secondary processing mandrel 55 and the pair of primary processing mandrel 56 are arranged at the same height in the vertical direction. Further, the primary processing mandrels 56 and 56 are supported in a through hole (not shown) formed in the base substrate 11 so as to be linearly movable, and linearly move back and forth.

  On the lower end surface of the processing tool 36V, a molding recess 60 is formed to be depressed. The inner surface of the molding recess 60 is upward between a pair of arcuate surfaces 62 and 62 corresponding to the arcuate surfaces 56A and 56A of the cores for primary processing 56 and 56, and the pair of arcuate surfaces 62 and 62. It consists of a semicircular central arc surface 61 corresponding to the core 55 for secondary processing. The tip surfaces of the lower surface pressurizing tool 40V and the bending tool 41V are arcuate concave surfaces 40B and 41B corresponding to the columnar secondary processing mandrel 55.

  Other configurations of the forming machine 10V of the present embodiment are the same as those of the forming machine 10 of the first embodiment. In this forming machine 10V, the workpiece 91 is fed between the core metal group and the machining tool 36V in a state where the primary machining cores 56 and 56 and the secondary machining core 55 are waiting below the machining tool 36V. The Then, at the initial stage where the machining tool 36V starts to move toward the bottom dead center, as shown in FIG. 9, both end portions of the work 91 are pushed by the machining tool 36V, and the arcuate surfaces 56A of the cores 56, 56 for primary machining. , 56A. At this time, the pressing tool 39 presses the pressed protrusion 37 of the processing tool 36V, and the sub motor 22M (see FIG. 1) of the sub slide drive mechanism 22 assists the main motor 21M (see FIG. 1) of the main slide drive mechanism 21. To do.

  Then, both end portions of the work 91 are formed in an arc shape along the arc surfaces 56A and 56A of the primary processing mandrel 56 and 56, and the intermediate portion of the work 91 becomes a linear shape in contact with the secondary processing mandrel 55. Before, the pressing tool 39 reaches the bottom dead center and retracts, and the primary processing cores 56 and 56 retract and come out of the movable region of the processing tool 36V. In this state, the processing tool 36V further descends and moves to the bottom dead center or near the bottom dead center. Then, as shown in FIG. 10, the central straight portion of the work 91 is pushed by the secondary processing mandrel 55 to the back of the forming recess 60 in the processing tool 36 </ b> V, and is formed into an arc shape corresponding to the central arc surface 61. Thus, the entire work 91 becomes circular.

  In this state, as shown in FIG. 11, the bending processing tools 41V and 41V and the lower surface pressing tool 40V are pressed against the workpiece 91 in order, and the forming of the workpiece 91 is completed. Then, after the processing tool 36V, the bending processing tool 41V, and the lower surface pressurizing tool 40V are retracted, the primary processing cores 56 and 56 are advanced to separate the workpiece 91 from the secondary processing core 55. Also in the configuration of the present embodiment, the pressing tool 39 of the sub slide drive mechanism 22 using the sub motor 22M (see FIG. 1) as a driving source temporarily presses the machining tool 36V on the way to the bottom dead center in the forward direction. Thus, the power shortage of the main motor 21M can be compensated, and the same effect as the first embodiment can be obtained.

[Third Embodiment]
The forming machine 10W of the present embodiment is shown in FIGS. 12 to 15 and includes an additional sub-slide drive mechanism 22W symmetrically to the sub-slide drive mechanism 22 with respect to the forming machine 10V of the second embodiment. Along with this, the pressed protrusion 37W is widened. Further, in the forming machine 10W of the present embodiment, the base metal W is composed of the sheet metal cutting blade 38E at the lower right corner of the processing tool 36V shown in FIG. 13 and the sheet metal cutting blade 54D at the upper corner of the lower guide block 54B. The workpiece 91 having a certain length is separated from the workpiece. Then, as shown in FIG. 13, when the workpiece 91 is separated from the base material W and the workpiece 91 starts to be bent along the arcuate surfaces 56A and 56A of the cores 56 and 56 for primary processing, the additional sub-slide drive mechanism 22W. After pressing the pressed protrusion 37W of the processing tool 36V in the forward direction with the pressing tool 39W, the work 91 is bent along the arc surfaces 56A and 56A of the primary processing cores 56 and 56 as shown in FIG. In the final stage, the pressed projection 37W of the processing tool 36V is pressed in the forward direction by the pressing tool 39 of the sub-slide drive mechanism 22. Then, both end portions of the work 91 are formed in an arc shape along the arc surfaces 56A and 56A of the primary processing mandrel 56 and 56, and the intermediate portion of the work 91 is linearly in contact with the secondary processing mandrel 55. After that, as in the second embodiment, after the primary processing cores 56 and 56 are retracted, as shown in FIG. 15, the processing tool 36V so that the pressed protrusion 37W is separated from the pressing tools 39 and 39W. Descends to form the workpiece 91 into a circular shape. Also according to the present embodiment, the same effects as those of the first embodiment can be obtained.

[Fourth Embodiment]
The forming machine 10Z of the present embodiment is shown in FIG. 16, and each rotation / linear motion conversion mechanism of the main slide drive mechanism 21Z, the sub slide drive mechanism 22Z, and the push-up slide drive mechanism 24Z includes a toggle link 79. Yes. Specifically, the toggle link 79 is formed by connecting one end portions of the first link bar 71 and the second link bar 72 so as to be rotatable by an intermediate pin 74. Further, a rotation support portion 73 is provided behind the slider 34 (corresponding to the “linear motion portion” of the present invention) in the base substrate 11 in the linear motion direction. The other end of the first link bar 71 is pivotally connected to the pivot support 73, while the other end of the second link bar 72 is pivotable to the link coupling protrusion 33 of the slider 34. It is connected. A crank disk 30 is provided on the side of the joint 74K having the intermediate pin 74 in the toggle link 79, and the eccentric shaft portion 31 of the crank disk 30 and the intermediate pin 74 are connected by the crank link 32. ing. Thereby, when the crank disk 30 is rotationally driven, the slider 34 moves linearly. Even if it is such a structure, there exists an effect similar to 1st Embodiment.
[Other Embodiments]
The present invention is not limited to the above-described embodiment, and can be implemented with various modifications other than those described above without departing from the scope of the invention.

10, 10V, 10W, 10Z Forming machine 21, 21Z Main slide drive mechanism 21M Main motor 22, 22Z Sub slide drive mechanism 22M Sub motor 22W Additional sub slide drive mechanism (sub slide drive mechanism)
36, 36V Processing tool 37, 37W Pressing protrusion 37A Pressed surface 39, 39W Pressing tool 53 Mandrel 55 Secondary processing mandrel 56 Primary processing mandrel 73 Rotating support portion 74K Joint portion 79 Toggle link 90, 91 Workpiece

Claims (7)

The rotation tool converts the rotation of the main motor into the linear motion of the machining tool by the rotation / linear motion conversion mechanism that has a bottom dead center that converts the rotation to linear motion and maximizes the pressing force of the linear motion. A main slide drive mechanism that processes the workpiece with
A sub-slide that converts the rotation of the sub motor into a linear motion of a pressing tool by the rotation / linear motion converting mechanism, and temporarily presses the processing tool on the way to the bottom dead center in the forward direction by the pressing tool. A forming machine comprising a drive mechanism.   The forming machine according to claim 1, wherein the pressing tool is configured to press the processing tool at a bottom dead center of the pressing tool.   The pressing tool is attached to a slider that moves linearly by receiving power from the sub-motor, and can be fixed by arranging the pressing tool at an arbitrary position in a direction parallel to the linear movement direction with respect to the slider. The forming machine according to claim 1, further comprising an adjustment mechanism.   4. The apparatus according to claim 1, wherein a plurality of the sub-slide drive mechanisms are provided, and the sub-slide drive mechanisms that are different at different timings press the processing tool in the forward direction with the pressing tool. Forming machine as described in the paragraph. Provide a pressed surface facing the opposite side of the forward direction on the processing tool or a slider that moves linearly integrally with the processing tool,
The press tool is disposed so as to be linearly movable in a direction obliquely intersecting with the linear motion direction of the processing tool so that the pressed surface can be pressed. A forming machine according to claim 1. Waiting in the machining area where the machining tool advances, and working the workpiece in cooperation with the machining tool while the machining tool is moving forward toward the bottom dead center, then retracts from the machining area A mandrel for primary processing;
Waiting in the processing region, and when the processing tool reaches the bottom dead center, comprising a secondary processing mandrel for processing the workpiece in cooperation with the processing tool,
6. When the processing tool and the primary processing mandrel cooperate to process the workpiece, the pressing tool presses the processing tool in a forward direction. A forming machine according to claim 1.   The rotation / linear motion converting mechanism has both ends of a linear motion movable part including the processing tool or the pressing tool and a rotation support part fixed to a base part that supports the linear motion movable part so as to be linearly movable. The part has a toggle link that is pivotally connected, and the linear link is bent and stretched by pushing and pulling the joint part provided in the middle of the toggle link from the side by the power from the motor. The forming machine according to any one of claims 1 to 6, wherein the movable portion is allowed to move linearly.

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